M240 with dinan sports tuner and VRSF downpipe

Ziyadeth · 10-16-2017, 10:08 AM

Hey guys, just seeing if anyone is running a relative set up as me. I have a m240 with the dinan sports tuner +4, dinan midpipes, Bms intake, and 4.5 in vrsf downpipe. After I installed my downpipe, I?m not getting the same power as I did before. Any reason why? Or do I need to switch to a more aggressive tune like JB4? Just thought I would have got more power, but I guess bigger downpipe, more flow, but less pressure. Any help or thoughts?

GrandMasterKhan · 10-24-2017, 10:15 AM

Because you have significantly changed the airflow characteristics of your engine it is highly recommended you get a proper dyno tune. Once you do you'll see a big bump in power.

CAMOETO · 10-25-2017, 10:18 AM

Quote:

Originally Posted by GrandMasterKhan

Because you have significantly changed the airflow characteristics of your engine it is highly recommended you get a proper dyno tune. Once you do you'll see a big bump in power.

How exactly do you suggest he gets a proper dyno tune on the m240i? The DME is locked.

madmax240 · 10-26-2017, 06:35 AM

What does DME stand for?
Because I'd rather a dyno tune than a piggyback.

CAMOETO · 10-26-2017, 10:08 AM

Quote:

Originally Posted by madmax240

What does DME stand for?
Because I'd rather a dyno tune than a piggyback.

DME is deciphered as Digital Motor Electronics Control Module. BMW speak for ECU. It's been locked on BMWs for about the last 7 years. For the m235i with the N55, the DME can be unlocked but needs to be removed from the car and sent in to a shop that can program it directly to unlock, such as PTF.

Unfortunately, there isn't a shop that has been able to unlock and flash the m240i b58 DME yet, at least that I know of.

B58togo · 10-30-2017, 10:01 PM

Quote:

Originally Posted by CAMOETO

How exactly do you suggest he gets a proper dyno tune on the m240i? The DME is locked.

Not sure what the DME being locked has to do with getting dyno tuned. Just because the DME hasn't been cracked, doesn't mean you can't dyno tune the car with a piggyback. It simply means there's no flash tune available yet. Map 6 on the JB4 can be custom tailored and doing so on a dyno to see max gains would be beneficial.

mike@x-ph.com · 11-15-2017, 05:35 PM

Lot of misinformation here.

OP Only reason i can think of is a boost leak from the downpipe install or a damaged O2 sensor.

Since your tune does not datalog, i recommend you get a mechanic to check the downpipe install for any boost leaks

10-16-2017, 10:08 AM	#1
Ziyadeth New Member 3 Rep 12 Posts Drives: 2014 F30 6 Speed Join Date: Apr 2014 Location: Mobile, AL iTrader: (0)	M240 with dinan sports tuner and VRSF downpipe Hey guys, just seeing if anyone is running a relative set up as me. I have a m240 with the dinan sports tuner +4, dinan midpipes, Bms intake, and 4.5 in vrsf downpipe. After I installed my downpipe, I?m not getting the same power as I did before. Any reason why? Or do I need to switch to a more aggressive tune like JB4? Just thought I would have got more power, but I guess bigger downpipe, more flow, but less pressure. Any help or thoughts?
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10-24-2017, 10:15 AM	#2
GrandMasterKhan Private First Class 173 Rep 146 Posts Drives: Evo9, '22 X3Mc, Turbo S2000 Join Date: Jan 2017 Location: BMW Southpoint, Durham NC. Dinan/Carbahn authorized Dealer. iTrader: (0)	Because you have significantly changed the airflow characteristics of your engine it is highly recommended you get a proper dyno tune. Once you do you'll see a big bump in power.
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10-26-2017, 06:35 AM	#4
madmax240 Private First Class 90 Rep 137 Posts Drives: Join Date: Sep 2007 iTrader: (0)	What does DME stand for? Because I'd rather a dyno tune than a piggyback.
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11-15-2017, 05:35 PM	#7
mike@x-ph.com Joint Chiefs of Staff 24082 Rep 190,597 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Lot of misinformation here. OP Only reason i can think of is a boost leak from the downpipe install or a damaged O2 sensor. Since your tune does not datalog, i recommend you get a mechanic to check the downpipe install for any boost leaks __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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